Coffee Roaster Two Pound Model (CR2)
Contents
1. Advanced Definition Roasting Control Board can connect to an optional Sonofresco Roast Profile Development Software package via a blue Bluetooth enabled PC or MAC Please contact Sonofresco regarding up grade options for your roaster By default all six profiles contain the Sonofresco default ideal roast profile General operation Roast profiles Display e Selecting Profiles The Sonofresco Coffee Roaster Control Board is designed to operate independent of the Sonofresco Roast Profile Application The profile software is not required for normal roaster operation but the profile software is required for creation editing monitoring and transfer of profiles to the roaster control If your coffee roaster 15 ADR enabled please re fer to the following as a quick reference to get started Please refer to the ADR software help file for detailed instructions on using the profile software Six Roast profiles are stored within the roaster control memory The Sonofresco Default A and five user defined profiles B F by default all profiles are stored as the Sonofres co Default Profile The control board incorporates a single display for reading both the current roast level set ting 0 9 and the active roast profile A F The display must be switched between the two modes In order to select the roast level and the active roast profile Place the power switch in the on position Place the gas switch in the off posit2. NSF ANSI 4 2009 UL Dus Gas Fired Food Service Equipment ANSI Z83 11b CGA 1 8b COOKING EQUIPMENT 47KJ NSF ANSI 4 File MH27543 47KJ File E236462 Coffee Kinetics LLC 1365 Pacific Dr Burlington WA 98233 360 757 2800 360 757 8172 Fax www sonofresco com 30 4046080
3. a sufficient increase in temperature The roast did not reach its set point in twenty minutes Failure to achieve ignition later in the roast cycle Temperature rises after the end of the roast cycle May indi cate a presence of fire 15 If You Need Help ERROR CODES Potential Cause Broken wire short in the wir ing or a defective temperature sensor Problem with the gas supply Dirty temperature sensor Interference with airflow Lack of proper Gas supply Dirty temperature sensor Likely cause is the propane supply ran out Gas supply is shut off after roaster has started Overfilling the roast chamber Neglecting to clean the chaff screen chaff collector and temperature sensor Solution Replace temperature sensor Check gas shutoff valve or propane supply See section on cleaning sensor Clean screen check exhaust use correct amount of beans Check shut off valve Check gas supply pressure Clean temperature sensor Refill propane tank Open gas shutoff valve Use recommended amount of beans Clean chaff collector and screen after each roast If you have done your best to work out a problem or question and still are not able to solve it we will be glad to help Call us at 360 757 2800 or contact us by email at office Sonofresco com 16 Replacement Parts A number of replacement parts are available through Sonofresco including new roasting chambers new chaff col
4. being a closed external fuel supply valve or empty propane supply e E4 The temperature decreased during the active roast cycle when the temperature should be in creasing The most likely cause 15 the propane tank emptied during the roast process In the event of an error code E2 4 the control board will shutoff the gas supply and leave the blower run ning until the roaster is sufficiently cooled down However an E1 and E5 error codes will result In both the gas as well as the blower to be turned off without entering the cool down cycle In the event of an E1 or ES error the blower is turned off to avoid causing a fire in the roast chamber if the sensor cannot detect a proper temperature status When the blower is shut off there 1s no longer cooling air available so the following procedure should be followed to handle such a scenario Remove roast chamber chaff collector assembly from the roaster Caution The roast chamber assembly will be hot Grasp only the roast chamber handle and if possible use oven mitts when removing the assembly from the roaster Dump beans including the chaff assembly onto into non combustible area or receptacle Outside on pavement or In a metal sink would be considered a safe place 25 4046080 14 Troubleshooting Electronic control has detected an out of range condition on the temperature sensor Temperature sensor has not detected
5. brewing equipment or practices 3 Allow the coffee to sit for 48 to 72 hours before grinding and brewing to allow the flavor to fully develop 6 4046080 2 Installation and Accessories Before installing the coffee roaster unpack the appliance and read the installation and operation manual Locations For your Roaster Basic Requirements We believe the roaster will prove most valuable to your business if its located where your customers can see it in operation You may or not be able to do that but there are a few essential requirements for the installation of the roaster A The roaster is not water resistant and should be protected from moisture and wind B The roaster must be installed not less than three inches from combustibles The back panel must be free of obstructions to allow for adequate air flow in the appliance C The roaster must be vented to the outside if installed indoors See the section on venting op tions D It must be reasonably level to operate properly E If you are at an altitude at or above 4500 please let us know some adjustments may be needed to allow the roaster to operate properly at altitudes above 4500 Fuel Supply Do not exceed 5 PSI inlet pressure to the roaster The gas supply should be installed adjusted and tested by a qualified gas installer Propane L P The LP connection on the back of the roaster 15 a standard 3 8 inch male flare fitting It is not necessary to use p
6. increased surface area At approximately eleven minutes the beans will reach the final roast level temperature at which time the electronic control board will automatically cycle the gas off and enter the cool down cycle During the cool down cycle the blower continues to circulate air until the beans are cool enough to be handled approximately seven minutes After the cooling cycle Is completed the blower will shut down and the roaster will go into standby until the start roast button is again pressed 16 4046080 8 Coffee Basics Coffee Descriptions We recommend reviewing our Green Been Page at www sonofresco com for brief descriptions for each of our single origin and Sonofresco blended coffees Please let us know if you require additional information Roast Temperatures It is important to understand that different varieties of green coffee beans whether a single origin or blend will roast differently from another at a given temperature In fact on occasion a current crop year bean will roast differently than a previous years crop due to various growing conditions from year to year The Sonofresco coffee roaster will roast a coffee to various end temperatures using roast levels incor porated in the control board Each setting 1s incremented by 3 5 C per setting starting at 193 C on level 0 and a maximum of 224 5 C on a level 9 Each end temperature is preprogrammed and cannot be modified by the user but can be modified using
7. or paper towel to remove loose chaff and oils Chaff collector groove Clean the chaff screen with a wire e Cleaned and reassembled the chaff col brush See chaff screen cleaning de lector assembly tails on following page 19 4046080 10 Detailed Chaff Screen Cleaning The chaff screen consists of a wire mesh screen held in place by an aluminum outer ring The mesh screen Is simply wires woven together to create a wire grid Each of these wires collect chaff and from the beans during the roasting process and must be cleaned to allow air to flow freely A wire brush is used to clean the wires as well as the chaff screen groove See detail below Cleaning is ac complished by aggressively scrubbing both sides with a wire brush around the perimeter outside edge of the ring and then cleaning the wires in both directions Screen ring Wire brush e Clean chaff screen groove to prevent chaff build up This buildup could affect the seal with the chaff wall e Clean the screen where it meets the groove around the entire perimeter of the screen Note It is important that the screen is cleaned all the way to the outer edge where it meets the ring Chaff screen groove Wire mesh e Use the wire brush to scrub in the direction of the wires to ensure the entire surface of the screen is cleaned Note A fine dust dried oils from the beans will be deposited on the table under the screen which indi cates the clea
8. roast chamber wipe the bottom surface of the roast chamber Note Some heat discoloration on the bottom plate is normal Vd Jd 2 27 Wii SOQ SS R A At the end of the day clean the entire roast chamber inside and out with a towel warm water and mild detergent to completely remove excess oils Note It is not recommended that the roast chamber be soaked or placed in a dishwasher as this will affect the gaskets 21 4046080 12 Daily Maintenance Daily maintenance is Important to keep the roaster operating and looking its best A maintenance rou tine at the end of every roasting day will allow the roaster to begin operation the next morning without delay The daily maintenance includes e Clean the chaff collector assembly as you would between roasts e Clean the entire roast chamber inside and out with a towel warm water and mild detergent to completely remove excess oils e Clean temperature sensor with a 3M pad Scotchbrite e Clean smoke box assembly with a damp 3M pad Scotchbrite e Clean external surfaces of the roaster u shape chrome top etc with a damp cloth and mild detergent e Clean the area around the roaster to minimize the chaff build up in the work area Temperature Sensor The temperature sensor plays a critical role in the roaster s operation by measuring the current tempera ture of the beans and sending the inf
9. the optional Sonofresco ADR software package Please contact customer service for more information regarding the Sonofresco ADR software There are many factors that determine the perfect cup of coffee such as bean type quality degree of roast and the brewing process It is our experience that customer geography also plays a large factor in determining the perfect cup of coffee Not all coffee drinkers are created equal some regions will want a bold dark coffee while others will appreciate a lighter style coffee It 1s important to experi ment with different coffee beans roast levels and brewing processes in order to determine what will best suit your customer base Make it fun involve your customers in the decision making process and you are sure to build a solid relationship with your customers Sonofresco recommends the following guideline as a starting point in developing your cup Use of coffee Roast Level End of Roast Temperature C Decafs mild drips breakfast blends 207 Most drips decaf espresso 210 5 Espresso robust drips Italians Yirgs etc 214 Handling Roasted Coffee After the roasting and cooling process is completed the beans can be placed directly into a bag or bin Freshly roasted coffee should be allowed to sit for 48 hours before grinding and brewing to allow the flavor to develop This process known as degassing allows the gasses to escape as the flavors develop in the bean Proper handl
10. the roast cycle This 1s simply condensation caused by moisture in the bean that will dissi pate quickly and will not affect the roaster performance The roaster is now automatically roasting the coffee and will continue to cycle the gas on off during the active roast cycle to gradually increase the bean temperature to the final roast level During the roasting process the beans will go through changes in color size and weight e Color As the bean temperature increases the first noticeable difference is the darkening color from green to light brown and then to a darker brown with oils on the bean surface if roasting on the higher roast levels Note Decaffeinated coffee will have a brown color before roasting due to the decaffeination process e Size As the bean is heated the internal cell walls of the bean will expand from the heat and cause the bean to increase in size by nearly a third This expanding of the bean 1s re ferred to as the crack and can be heard as a light snapping or cracking sound typically occurring first around seven minutes and again near ten minutes 1 e first crack and second crack e Weight Before roasting begins the bean 1s considered heavy or green due to the mois ture trapped inside During the roasting process the moisture is driven out of the bean To wards the end of the roast the beans will appear to be bouncing around the roast chamber more rapidly due to the weight loss and
11. Coffee Roaster Two Pound Model CR2 2014 Models User s Manual Model 2100 2200 2300 2400 Coffee Kinetics LLC www Sonofresco com Patent Pending This Manual Must Be Retained For Future Reference I 4046080 WARNING IF YOU SMELL GAS TURN OFF THE MANUAL SHUT OFF VALVE FROM THE PRO PANE LP OR NATURAL GAS NG SUPPLY DISCONNECT THE ELECTRICAL POW ER TO THE APPLIANCE CALL YOUR LOCAL GAS SERVICE COMPANY TO CHECK THE GAS CONNECTION TO YOUR APPLIANCE This WARNING is to be posted in a prominent location close to the appliance FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE WARNING ELECTRICAL GROUNDING INSTRUCTIONS THIS APPLIANCE IS EQUIPPED WITH A THREE PRONG GROUNDING PLUG FOR YOUR PROTECTION AGAINST SHOCK HAZARD AND SHOULD BE PLUGGED DI RECTLY INTO A PROPERLY GROUNDED THREE PRONG RECEPTACLE DO NOT CUT OR REMOVE THE GROUNDING PRONG FROM THIS PLUG ELECTRICAL GROUNDING MUST BE IN ACCORDANCE WITH THE LOCAL CODES OR IN THE AB SENCE OF LOCAL CODES WITH THE NATIONAL ELECTRICAL CODE ANSI NFPA 70 OR THE CANADIAN ELECRICAL CODE CSA C22 2 AS APPLICABLE WARNING KEEP THE AREA AROUND THE APPLIANCE FREE AND CLEAR FROM COMBUS TIBLE MATERIALS MINIMUM CLEARANCE TO ADJACENT COMBUSTIBLES SHALL BE 3 INCHES FROM THE SIDE AND BACK OF THE APPLIANCE WARNING THIS APPLIANCE REQUIRES SUFFICENT AIR FOR COMBUSTION ROASTING AND VENTILA
12. Completed roast chamber chaff collector assembly Note Use two hands when placing chaff collector assembly onto roast chamber Rubber seal Black Top edge of roast chamber 13 4046080 6 Control Board Functions Roaster Controls The roaster 15 controlled by an electronic control board that monitors the roasting process based on information provided by the temperature sensor RTD and allows the coffee to roast to a predetermined temperature based on the roast level setting selected by the user The control board consists of the following user controls and display Power Switch Controls the power to the appliance Gas switch Activates the gas in stand by mode Will not actively turn gas on Down Arrow Lowers the roast level with each press Up Arrow Increases the roast level with each press LED Display Displays current roast level setting Also provides time temperature and profile selec tion feedback as discussed in the hints and tips sec tion Initiate the roast with three simple steps 1 Switch the power and gas switches to the on position 2 Select the desired roast level for the coffee being roasted using the up down arrow buttons 3 Push and release the start roast button Place the power and gas Press the start roast button switches in the on position Select desired roast setting 0 9 Roaster will start automatically 14 4046080 6 1 Advanced Control Board Functions The Sonofresco
13. ING ITS INDIVIDUAL MANUAL SHUT OFF VALVE DURING ANY PRESSURE TESTING OF THE GAS SUPPLY PIPING SYSTEM AT TEST PRESSURES EQUAL TO OR LESS THAN 0 5 PSI 3 45 kPa OPERATION SOME UNUSUAL CONDITIONS SUCH AS NOT CLEANING THE CHAFF COLLECTOR AFTER EACH ROAST DRASTICALLY OVERFILLING THE ROAST CHAMBER OR BLOCKING THE ROASTER VENT CAN CAUSE A FIRE IN THE ROASTING CHAMBER DO NOT LEAVE THE ROASTER TO RUN UNATTENDED IN THE EVENT OF A FIRE TURN OFF THE GAS SUPPLY AND ELECTRIC POWER AND ALLOW THE ROASTER TO COOL COMPLETELY BEFORE TOUCHING IT TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE YOUR ROASTER TO RAIN OR MOISTURE DO NOT REMOVE THE HOUSING COVER FROM THE ROASTER THERE ARE NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSON NEL THIS IS A GAS FIRED APPLIANCE AND MUST NOT BE VENTED INTO A CLOSED SPACE REFER TO THE INSTALLATION PORTION OF THIS MANUAL FOR PROPER VENTING THE GLASS ROASTING CHAMBER AND THE METAL ABOVE THE ROASTING CHAM BER CAN CAUSE BURNS IF TOUCHED DURING THE ROASTING CYCLE ROASTERS IDENTIFIED FOR USE WITH NATURAL GAS MUST NOT BE RUN ON PRO PANE LP DOING SO WOULD POSE A SERIOUS POTENTIAL FIRE HAZARD BE SURE THAT YOU DO NOT USE A GAS OTHER THAN THE ONE SPECIFIED ON THE NAME PLATE OF YOUR ROASTER 4 4046080 ROASTER MANUAL Roasting with the Sonofresco Commercial Coffee Roaster allows you to offer a high quality product and display a truly unique feature to your custo
14. TION DO NOT OBSTRUCT THE FLOW OF AIR TO THE BACK VENTILA TION PANEL 2 4046080 AVERTISSEMENT UNE INSTALLATION UN AJUSTEMENT UNE ALTERATION UN SERVICE OU UN EN TRETIEN NON CONFORME AUX NORMES PEUT CAUSER DES DOMMAGES LA PRO PRIETE DES BLESSURES OU LA MORT LIREZ ATTENTIVEMENT LES DIRECTIVES D INSTALLATION OU L ENTRETIEN DE CET EQUIPEMENT AVERTISSEMENT DIRECTIVES POUR LA PRISE DE COURANT ELECTRIQUE CET APPAREIL EST MUNI D UNE FICHE A TROIS BRANCHES PRISE DE COURANT AFIN DE VOUS PROTEGER DES CHOCS ET DOIT ETRE BRANCHE DIRECTEMENT DANS UN RECEPTACLE ADEQUAT DE PRISE DE COURANT A TROIS BRANCHES IL NE FAUT PAS COUPER OU ENLEVER UNE BRANCHE DE CETTE FICHE DESTINE A UN USAGE AUTRE QUE DOMESTIQUE ANSI Z83 11b 2009 CGA 1 8b 2009 MANAGER SERVICE EQUIPE 3 4046080 INSTALLATION INSTALLATION OF THIS APPLIANCE MUST CONFORM TO LOCAL CODES IN THE AB SENCE OF LOCAL APPLICABLE CODES IT MUST COMPLY WITH THE NATIONAL FUEL GAS CODE ANSI 4223 1 NATIONAL GAS INSTALLATION CODE CAN CGA B149 1 OR THE PROPANE INSTALLATION CODE CA CGA B149 2 AS APPLICABLE INCLUDING THE APPLIANCE MUST BE ISOLATED FROM THE GAS SUPPLY SYSTEM WITH AN INDIVIDUAL MANUAL GAS SHUT OFF VALVE THE APPLIANCE AND ITS INDIVIDUAL SHUT OFF VALVE MUST BE DISCON NECTED FROM THE GAS SUPPLY SYSTEM DURING ANY PRESSURE TESTING GAS SUPPLY SYSTEM AT TEST PRESSURES IN EXCESS OF 0 5 PSL 3 45 kPa THE APPLIANCE MUST BE ISOLATED FROM THE GAS SUPPLY BY CLOS
15. ce steps for trouble free roaster operation Roaster Component Maintenance Action Frequency Chaff Screen e Clean with wire brush e After every roast e Soak in commercial cleanser e Once week Temperature Sensor e Clean sensor with detergent dampened Daily 3M pad Scotchbrite Smoke Box Assembly e Clean surfaces with pad Scotchbrite e Daily Roast Chamber e Clean with soft cloth e After each roast e Clean with warm water amp mild detergent e Daily Chaff Collector e Clean chaff wall groove e After each roast Outside Surfaces e Clean top panel and U shape with mild e Daily commercial cleanser 24 4046080 13 Error Codes and Troubleshooting The roaster employs five error codes displayed on the control board LED display to inform the user of potential issues with the operation of the roaster The roaster control board readout is a segmented single digit display error codes are cycled to the dis play in series as follows An error code E1 would be displayed as a backwards three a pause then the number one 1 The code will continue to flash E1 E1 etc until the power is cycled off and then on again In the case of an E1 an out of range temperature sensor the error will not clear unless the problem with the temperature sensor is resolved The most common errors are e E2 The roaster did not detect a rise in temperature during the start sequence the most likely cause
16. cial appliances are on the same circuit These types of appliances may produce electrical noise that can cause problems with the elec tronic control Do not operate 120 volt 60Hz appliance 240 volts 50Hz and vice versa Any electrical work should be done by a qualified electrician 7 4046080 Venting The roaster must be vented to the outside when used indoors to prevent the accumulation of emissions within the dwelling Venting options include placing the roaster under an existing ventilation hood such as in a commercial kitchen venting directly into a steel vent pipe or the Sonofresco vent hood We recommend the dedicated vent hood shown in Figure 1 The vent hood will allow the roaster to be vented greater distances and will eliminate the possibility of back pressure and wind affecting the roaster associated with direct venting Direct Venting Direct venting is a means of venting the coffee roaster through a ridged vent pipe system to the outside The optional Sonofresco direct vent kit is supplied with everything needed for a basic installation WW ALL TRIMBLE TW ISI LOCK FITTINGS VENTILATION CAP 342 7 APPROXIMATE 20 6 TABLE TOF TYPICAL DIRECT VENT INSTALLATION SONOFRESCO WR TOO WENT KIT SHOWN ROASTER WIDTH APPROX 13 5 WIDE 8 4046080 VENT HOOD An optional vent hood can be ordered from Sonofresco and provides many advantages First since it is a powered vent the exhaust can be vented at greater distances
17. d readout is a segmented single digit display numbers are cycled to the display in series as follows Example The roaster 1s running for 1 30 one minute and thirty seconds from start when the roast button 15 pressed and released the display will scroll 1 3 0 one dash three zero This time should be noted immediately proceed to read the temperature data Temperature Measurement The temperature measurement 15 the real time temperature of the roasting process at the moment it 15 viewed During an active roast simultaneously push and hold both the up and down arrows to display the temperature Note If the up and down arrow buttons are continuously held down during the entire roast process the temperature can be viewed rising over the course of the active roast The roaster control board readout is a segmented single digit display numbers are cycled to the display in series as follows Example The bean temperature is currently 135 C one hundred thirty five degrees Celsius the dis play will scroll 1 3 5 This temperature should be noted and compared to the graph on the following page Temperature Measurement Graph Comparison Simply find the time on the bottom edge of the graph and the temperature on the left side and intersect to find the current position on the roast profile Although this data is not criti cal to the user when roasting coffee you may be asked to perform this operation during a servic
18. during a roast Lift handle The roaster is designed to operate correctly with a fixed volume of approximately 2 8 lbs of green beans in the roast chamber and is easily measured using the supplied metal can This volume ensures correct air flow balance through out the entire roasting process The following steps will ensure that the correct vol ume of coffee beans are used for each roast e Fill the supplied measuring can level to the top Two level cans of coffee beans are used for the Empty two level filled cans into two pound roaster per roast cycle roast chamber Caution The supplied can must be used in order to achieve the correct volume of beans 12 4046080 Assemble the Chaff Collector Chaff wall ends After adding the correct volume of beans to the roast chamber assemble the chaff collector and place 1t on the roast chamber The chaff wall ends seal to the chaff collector base and screen grooves to prevent air and chaff from escaping from the roaster The completed chaff collector assembly then seals to the top rim of the roast chamber e Set one of the chaff wall ends into the chaff collector Chaff screen groove groove e Set the chaff screen groove onto the end of the chaff wall Chaff collector groove Chaff wall e Place the chaff collector assembly on top of the roast chamber ensuring that the rubber seal seats against the top rim of the roast chamber
19. e call to help troubleshoot potential roaster issues The Sonofresco roast profile 15 located on the following page 27 4046080 S9q9l9O 9 VV VANJA 4114 LSVOY sul OWI 8L 9 Gb Ve L OL 6 8 Z 9 S bv L 0 _ C n TE TK 1 l C T T ss L T JT TPTPN Tl I T tit tt ert tt tt tt tt TT tt tt ttt te tT AYNLVYAdWAL LSVOq aJLSVO Y 33954409 095344540305 LO 00 OSL 002 osz 5 Bunseoy 4046080 28 16 Warranty Information Sonofresco warrants the coffee roaster against defects In workmanships or materials for a period of one year from the date of purchase as follows 1 Ifthe product is determined to be defective Sonofresco will repair or replace the product free of charge 2 This warranty does not cover replacement of the glass roasting chamber the chaff screen or gaskets 3 This warranty does not cover problems resulting from poor installation or operator abuse Roasting anything other than green coffee beans in the machine will void the warranty Repair or replacement as provided under this warranty is the exclusive remedy of the purchaser Sonofresco shall not be liable for any incidental or consequential damages for breach of any ex press or implied warranty on t
20. freshness and quality of your end product Your customers will soon experi ence the freshest coffee they have ever tasted We are excited about bringing the producers and consumers of roasted coffee closer together and restoring the idea of coffee as a locally roasted and impeccably fresh product Depending on the degree of darkness of the roasted coffee and the type of green coffee bean it should take between seventeen and twenty minutes to roast and cool two pounds of coffee In a ten hour day you can easily roast fifty five to sixty pounds of high quality coffee with just one of Sonofresco Coffee Roaster 1 Roasted coffee loses its freshly roasted flavor in about a week so it is very important to keep track of the age of your roasted coffee If you are going to sell whole bean coffee put the date roasted right on the bag Sell it or brew it within a few days of roasting and the flavor will be genuinely memorable 2 Always use top quality coffee You will get better roast consistency produce less smoke and get much better flavor out of clean well graded specialty coffees The difference in price between top quality specialty green coffee and lower quality coffee is definitely not worth the disappointment Please contact Sonofresco for help in selecting the perfect green coffee bean 3 Great fresh roasted coffee can be ruined by poor grinding and brewing Our representatives will be glad to help if you have questions about your
21. have no chaff should roast fine in the roaster But If you are having problems roasting decaffeinated coffees contact us and we will help guide you in the right direction 4 Things To Remember The coffee roaster has been designed to be simple to operate but before you start you must understand some basic principles of operation e Do not use the power button to stop a roast If a roast appears to be going too dark just turn off the Gas switch located on the control board and the roaster will begin its normal cooling cycle Turning off the power switch will prevent the beans from cooling and can begin to smolder and generate smoke Always allow the roasted beans to cool before remov ing from the roaster e Always use the measuring can supplied with the roaster Fill two cans level to the top with green beans Two full cans contains approximately 2 8 pounds of green coffee and will yield approximately 2 4 pounds of coffee roasted on a 5 setting Do not overfill under fill or use a can other than the one supplied with the roaster Doing so will cause incon sistent results and loss of coffee Please contact customer service for a replacement can if lost e Keep the roaster clean Refer to the Roaster Maintenance section for proper cleaning proce dures It is important to maintain the roaster to keep it operating at its best Do not leave the roaster to run completely unattended As with any appliance unusual con d
22. his product 29 4046080 16 Warranty Information There are four models of the Sonofresco coffee roaster The roasters all follow the same roast profile and have the same 2 8 pound green per cycle roasting capacity All of the machines will use about 350 watts of electric power The heating in all machines 15 supplied by either propane or natural gas The Sonofresco models 2200 Natural Gas 120vac 60 Hz 360 48 000 BTU hr 2300 30 50 Hz 45 000 BTU 700 8000 BTU Units intended for 50 Hz will not operate properly on 60 Hz and vice versa Units intended for natural gas will not operate properly if run on propane Units intended for propane will not operate properly on natural gas Please contact Sonofresco for information regarding converting a roaster from one fuel to another Roasters can not be field converted without a fuel conversion kit specific to the Sonofresco coffee roaster Any attempt to convert without the proper conversion kit could result in injury or death All models weigh approximately 65 pounds 29 kg and are 15 inches 381 mm by 30 inches 762 mm by 21 inches 68 6 cm high 94lb 43kg ship weight Models 2100 and 2200 are tested and certified by Underwriters Laboratories for use in the U S and Canada to the following standards Gas Fired Food Service Equipment In accordance with American National Standards Institute ANSI Z83 11b 2009 Canadian Gas Association CGA 1 8b 2009
23. ing should include allowing the beans to sit in a covered but unsealed bin before use If the bin is sealed tightly the gases cannot escape and the flavor development process will slow Do not allow the beans to become wet or come into contact with syrups It is also recommended to use the coffee within seven to ten days in an effort to maintain the freshest possible product 17 4046080 9 Preparing for the Next Roast After the last roast is completed the roaster components will need to be cleaned prior to starting the next roast to ensure that each roast will be consistent with the previous batches The following is a de scription of the fundamental operation and the maintenance required between roasts The entire process should take no more than one minute to complete As discussed the bean will expand and increase in size during the roasting process During this expan sion phase the bean will crack and shed it s skin also known as chaff the outer skin of the coffee bean This chaff is captured by the fine mesh of the chaff screen to minimize the amount of particulate entering the ventilation system The chaff also acts to balance the air flow in the system as the bean be comes lighter during the roast due to the moisture being driven off The chaff screen is designed to catch the chaff but allow the hot roasting gases to pass through and into the ventilation system Re stricting the airflow through the screen by not removing
24. ion Fig 2 Press the start roast button the display will switch to the currently active roast profile let ter A F Fig 3 Select the desired roast profile letter using the up down arrow buttons Fig 4 Press the start roast button the display will switch back to the current roast level number 0 9 Place the gas switch the on position Fig 2 Change the roast level using the up down arrow buttons to the desired roast level Fig 5 The roaster is now ready for a roast cycle and will do so utilizing the roast profile and roast level previously selected Press the start roast button to initiate a roast Fig 6 Fig 6 15 4046080 7 The Roasting Process Once the start button is pushed the roaster will start roasting automatically and the following will be ob served during the process The blower will immediately turn on and the beans will bounce fluidize around in the roast chamber The beans should appear to swirl or rotate around the roast chamber indicating that the beans are mixing properly Approximately 5 seconds after the start button is pushed a decimal point will come on in the lower right hand corner of the LED display indicating the control Is cycling the gas on At approximately 15 seconds after start the gas will ignite indicated by a slight puff sound and heat in the roast chamber Note It 1s not uncommon for the inside of the roast chamber to look wet at the beginning of
25. ipe sealant or tape on the flare fitting threads doing so may cause a leak The roaster is supplied with a regulator hose assembly for connection to a standard barbeque size propane bottle with a manual shut off valve If connecting to a large residential size tank the supplied propane regulator will not be needed but the propane supply pressure to the roaster must be adjusted to a minimum of 11 inches water column for the roaster to work properly A manual gas shut off valve must be installed at the roaster If you are using a propane roaster indoors you must comply with any local codes for installing plumbing and venting a propane appliance DO NOT INSTALL THE PROPANE BOTTLE INDOORS THE BOTTLE MUST BE IN STALLED OUTSIDE ACCORDING TO LOCAL CODES Natural Gas N G The natural gas roaster is supplied with a 2 inch male NPT fitting for connection to a natural gas supply Installation and connection to a natural gas line must comply with all local codes The natural gas supply pressure should be adjusted to a minimum of 7 inches water column flow ing or operating pressure for the roaster to work properly A manual gas shut off valve must be 1 stalled at the roaster Electric Power The roaster must be plugged into a properly wired grounded three prong outlet The roaster only draws 3 amps at 120 volts ac and will not need a dedicated circuit In some commercial ap plications a dedicated circuit may be needed if large or multiple commer
26. itions such as a power outage blocked vent or failure to properly maintain the roaster can cause coffee to smolder and generate smoke in the roast chamber It is good practice to be with in earshot of the roaster when in operation so you can respond if any of these conditions should occur e careful not to chip or scratch the glass roasting chamber The roasting chamber is made of very high quality ceramic glass which is capable of handling thermal stress greater than that produced by the roaster The glass will not however handle thermal cycles after being damaged due to impact or abrasion The roasting chamber must be handled with care at all times Sonofresco will not be held liable for breakage 10 4046080 ROASTER COMPONENT DESCRIPTIONS Smoke Box Assembly Chaff Collector Assembly Stanchion Chaff Collector Handle Chrome Top Plate Roast Chamber Control Board Lift Handle U Shape Two Pound Coffee Roaster CR2 Chaff Collector Assembly 11 4046080 5 Filline The Roaster and Component Assembly Remove Roast Chamber Chaff Collector Assembly e Lift handle to raise smoke box assembly The smoke box will rise approximately 3 4 e Remove roast chamber chaff collector by lifting straight up and back Caution The roast chamber is able to with stand much higher temperatures than the roaster is capable of producing However it can be damaged if impact occurs on a hard surface and then subsequently heated
27. lector screens temperature sensors control boards and other items You may want to have spare screens or roasting chambers on hand to avoid interruptions in production Contact your local representative or the Sonofresco office for prices and availability 26 4046080 15 Hints and Tips Roast Profile One way to further understand and monitor the roaster operation 1s by viewing the roast profile The electronic control board 15 designed to control the rate at which the coffee temperature ris es over time The roast profile is basically a time versus temperature graph that determines when the gas 1s cycled on to heat the beans and then cycled off to prevent the beans form heating to quickly The gas 1s cycled on and off through out the entire active roasting process The roaster will continue along the roast profile until the temperature reaches the specified temperature associated with the roast level setting and then enters the cool down phase The elapsed time and current roast temperature can be viewed during the active roast via the LED display and referenced to the roast profile graph on the fol lowing page Real time data can be viewed using the Sonofresco ADR software call for details Time Measurement The time measurement is the time from the beginning of the roasting process when the start roast but ton was pressed During an active roast push and release the start roast button to display the time The roaster control boar
28. mers The Sonofresco coffee roaster is an automatic hot air roaster designed to evenly heat coffee beans in a roasting chamber monitor the roasting process roast to a desired roast level and cool the roasted coffee beans all in a seventeen to twenty minute cycle depending on the degree of darkness of the roasted coffee Although the roaster 1s automatic there are procedures involved for proper operation and maintenance Every user must learn how to correctly operate and maintain the coffee roaster to ensure consistent roasting results The information in this manual will prepare you to operate and maintain the coffee roaster and 1s cov ered in the following sections TABLE OF CONTENT Page 1 Introduction 6 2 Installation and Accessories 7 3 Green Coffee 10 4 Things to Remember 10 5 Filling The Roaster and Component Assembly 12 6 Control Board Functions 14 7 The Roasting Process 16 8 Coffee Basics 17 9 Preparing for the Next Roast 18 10 Detailed Chaff Screen Cleaning 20 11 Roast Chamber Maintenance 21 12 Daily Maintenance 22 13 Error Codes and Troubleshooting 25 14 Troubleshooting 26 15 Hints and Tips 27 16 Warranty Information 29 17 Specifications 30 5 4046080 1 Introduction Welcome to the world of truly fresh coffee With your Sonofresco coffee roaster truly fresh roasted coffee will soon be a regular part of your life The Sonofresco Coffee Roaster will dramatically demon strate your commitment to
29. ning is being done correctly e Turn the screen 90 degrees to clean the wires in the other direction e After completing the cleaning flip the screen over and repeat on the other side e Soak the screen in a commercial cleanser such as Puro Caff weekly to remove excess oils 20 4046080 11 Roast Chamber Maintenance It is important that the roast chamber be cleaned after every roast to prevent the build up of oils on the glass surface as well as the bottom plate Oil build up is not only unsightly it will also affect the roaster performance if the build up becomes excessive The beans must move around freely within the roast chamber to properly mix the hot air and the beans for an even and consistent roast Oils deposited on the glass cylinder and bottom plate create a rough surface that can cause the beans to slow down in the roast chamber due to friction This slowing of the beans can cause darker and inconsistent roasts Wiping the roast chamber glass and bottom plate with a dry terry cloth or paper towel after every roast will reduce the build up of oils Caution The roast chamber is one of the more costly components of the roaster Care must be taken when handling to prevent damage or breakage e With a firm grip the roast chamber wipe the entire inside surface of the roast chamber e To prevent breakage avoid resting the roast chamber on a table or counter top during cleaning e With a firm grip on the
30. ormation to the control board The control board then interprets this information and cycles the gas on off accordingly thus ensuring that the beans roast evenly during the cycle following the Roast Profile If the temperature sensor sends inaccurate information to the control board the outcome of the roasting process will likely be different than expected Example The coffee beans are actively roasting at a temperature of 200 C near the end of the active roast cycle but the temperature sensor is only reading and sending a temperature of 195 C to the con trol board The control board 1s designed to allow the beans to reach a set temperature at a given time so the control board only seeing 195 C continues to roast the beans The beans at this point are near the end temperature but are allowed to further roast creating a much darker than expected roasted cof fee Although the temperature sensor and control board are operating correctly they are actually lag ging behind the coffee s actual temperature The most common reason for this 1s that the temperature sensor 1s being insulated from the heat of the beans due to excess build up of chaff and oils Similar to wearing a jacket m the winter keeping the cold out and body heat in but In the case we are slowing down how fast the heat gets to the temperature sensor Again this causes the coffee to roast to a higher actual temperature than desired It is essential that the tem
31. perature sensor be maintained to ensure accurate measurement of the bean temperature for a successful outcome 22 4046080 Component Maintenance The two most important items to properly maintain are the screen and the temperature sensor The Sonofresco coffee roaster incorporates an improved hard mounted stainless steel temperature sen sor which allows for more robust cleaning methods The sensor will accumulate oils during the course of roasting it is important to remove these oils on a daily basis to prevent excessive build up that can degrade the performance of the roaster Clean the temperature sensor with a 3M pad folded in half over the sensor It is also acceptable to use a mild detergent such as Clean Rite Purple Power to break down tuff buildup Rub the sensor back and forth as if you were sanding a pencil the sensor should be cleaned down to the metal at the end of every roasting day e Fold the 3M pad around the sensor 3M pad e Rub the sensor back and forth to Scotchbrite remove chaff and oil deposits Temperature sensor RTD e Wipe the inside of the smoke box assembly e Wipe the entire outside of the roaster with a using a Purple Power dampened 3M pad cloth and mild detergent e The assembly should be cleaned down to the e Clean the chaff from around the roaster work metal finish after every roasting day area 23 4046080 ROASTER MAINTENANCE SUMMARY Schedule and follow these maintenan
32. the chaff between roasts will lead to darker and darker roasts Additionally oils from the beans are deposited on the wires of the screen during the roasting process and must be removed in order to minimize build up over time and cause a reduction in airflow through the screen The following maintenance summary will prevent the build up of oils on the screen Detailed steps are outlined on the following page e Remove chaff collector from the roast chamber and set it upside down on a table e Remove chaff from the chaff collector e Remove the chaff collector and place on table right side up e Remove the balance of chaff from the chaff screen e Clean loose chaff from the chaff collector groove using a wire brush e Clean the inside and both ends of the chaff wall with a dry terry cloth or paper towel to remove loose chaff e Clean the chaff screen with a wire brush See chaff screen cleaning details 18 4046080 9 Preparing for the Next Roast Continued e Remove the chaff collector from the e Remove chaff collector and set on table right roast chamber and set it upside down on side up a table e Remove the balance of chaff from the chaff e Remove the chaff from the chaff screen collector SDN PTT Ta LERS SA ana oe I e Clean loose chaff from chaff collector groove e Clean inside and both ends of chaff using a wire brush wall with a dry terry cloth
33. without the risk of back pressure to the roaster Second the exhaust can be tied into existing ducting without back pressure issues and third strong wind pressure against the outside vent will not pose a problem to the roaster The Sonofresco Vent Hood also incorporates a halogen light aimed at the roast chamber to highlight the roasting process The basic hood installation is shown below Please contact Sonofresco for more details on venting the coffee roaster with a vent hood PIPES MUST BE INSTALLED WITH PROPER CLEARANCE TO COMBUSTABLES AND TERMINATION CAPS S INCH VERTIAL VENT OPTION HOOD BACKPLATE MOUNTED TO WALL HOOD MOUNTED TO BACK PLATE S INCH OIAMETER HORIZONTAL VENT OPTION ADJUSTABLE WALL TH Ii B LE EATERMAL YALL 20 4 TYPICAL VENTILATION HOOD INSTALLATION SOMOPFRESC O WK 200 WENT HOOD SHOWN ROASTER WIDTH APPROX 13 5 WIDE 9 4046080 3 Green Coffee It is important to know that not all green coffees are equal While most green coffee will roast well in your roaster some poorly processed coffees may not Sonofresco maintains a good variety of excellent specialty grade green coffees that have been tested for suitability for your coffee roaster Please contact us for more information The roaster 1s designed to roast normally processed washed or dry process coffees which produce a certain amount of chaff towards the end of the roasting cycle Decaffeinated coffees which
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